Combined prefabricated reinforced concrete stair mold and splicing method
US-2022228381-A1 · Jul 21, 2022 · US
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for making stairs or stair units comprising more than one step (in situ E04G13/06)
for making stairs or stair units comprising more than one step (in situ E04G13/06) · Cooperative Patent Classification (CPC)
Separating, mixing, shaping, printing, and transporting materials.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | B28B7/225 |
| Official title | {for making stairs or stair units comprising more than one step (in situ E04G13/06)} |
| Display label | for making stairs or stair units comprising more than one step (in situ E04G13/06) |
| Total patents | 3 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity appears to be declining based on the most recent years.
| Year | Patents |
|---|---|
| 2021 | 2 |
| 2022 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.